/*
 * Copyright (c) 2019 The StreamX Project
 * <p>
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package com.streamxhub.streamx.plugin.profiling.util;

import java.util.ArrayList;
import java.util.List;

/** @author benjobs */
public class ClassMethodArgumentFilter {
  private static final String METHOD_NAME_WILDCARD = "*";

  private ClassMethodArgument[] classMethodArguments = new ClassMethodArgument[0];

  public ClassMethodArgumentFilter(List<ClassMethodArgument> classMethodArgumentToFilter) {
    if (classMethodArgumentToFilter != null) {
      this.classMethodArguments = new ClassMethodArgument[classMethodArgumentToFilter.size()];
      for (int i = 0; i < classMethodArgumentToFilter.size(); i++) {
        this.classMethodArguments[i] = classMethodArgumentToFilter.get(i);
      }
    }
  }

  public boolean isEmpty() {
    return classMethodArguments.length == 0;
  }

  public boolean matchClass(String className) {
    for (ClassMethodArgument classAndMethod : classMethodArguments) {
      if (className.startsWith(classAndMethod.getClassName())) {
        return true;
      }
    }
    return false;
  }

  public List<Integer> matchMethod(String className, String methodName) {
    List<Integer> result = new ArrayList<>();

    for (ClassMethodArgument classMethodArgument : classMethodArguments) {
      if (className.startsWith(classMethodArgument.getClassName())) {
        if (METHOD_NAME_WILDCARD.equals(classMethodArgument.getMethodName())
            || methodName.equals(classMethodArgument.getMethodName())) {
          result.add(classMethodArgument.getArgumentIndex());
        }
      }
    }

    return result;
  }
}
